/Engine/Source/Runtime/Engine/Public/Animation/AnimNodeData.h
Get the specified mutable data for the specified instance. If the data is not held on the instance this will return nullptr.
void * GetInstanceData ( [UE::Anim::FNodeDataId](API\Runtime\Engine\Animation\FNodeDataId) InId, [FAnimNode_Base](API\Runtime\Engine\Animation\FAnimNode_Base) * InNode, [UObject](API\Runtime\CoreUObject\UObject\UObject) * InCurrentObject ) const